Fluid-fuel burner.



No. 811,078. PATENTED JAN. 30, 1906.- F. L. MOGAHAN 81; E. G. PLAGER.

FLUID FUEL BURNER.

APPLICATION FILED FEB. 11,1905.

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No. 811,078. PATENTED JAN. 30, 1906. F. L. MOGAHAN & E. G. FLAGER.

FLUID FUEL BURNER.

APPLICATION FILED FEB.11,1905.

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UNITED s'ra'rns PATENT oFFioE.

FREDERICK L. MGGAHAN AND EDWARD G. FLAGER. OF ST. LOUIS,

' MISSOURI; SAID FLAGER ASSIGNOR TO SAID MCGAHAN.

FLUID-FUEL BURNER.

Specification of Letters Patent.

Patented Jan. 30, 1906.

To all whom it may concern:

Be it known that we, FREDERICK L. Mo- GAHAN and EDWARD G. FLAGER, citizens of the United States, residing at the city of St. Louis, in the State of Missouri, have invented a certain new and useful Fluid-Fuel Burner,

. The object of our invention is to producea burner which will by the proper mixture of air with the fluid fuel employed enable us to bring about complete combustion of such fuel.

Our invention is especially adapted for use in limekilns and other similar burning processes where even and regular temperature is necessary. It may, however, be employed in a variety of other ways.

In the drawings accompanying this specification, in which like characters refer to corresponding parts in the several views, Figure 1 is a front elevationof the burner applied to the door of a kiln or furnace. Fig. 2 is a top plan view, on a reduced scale, of the apparatus'shown in Fig. 1, the door of the kiln or furnace being shown in section. Fig. 3 is a vertical longitudinal section of the burner shown in Fig. 1, and Fig. 4 is a detail view in elevation of the inner side of the cap of the mixing-chamber.

Referring to the drawings, representsthe fire-opening in the wall 11 of a kiln or furnace. The hinged door which closes the opening 10 is composed of two plates 13 and 14, the outer plate 14 being fastened to the inner plate 13 by means of suitable bolts 15. The inner plate 13 is hinged to the wall 11 of the kiln or furnace by means of hinges 16. The space between the plates 13 and 14. is closed at the top and at the sides by bending down the top and sides of the plates 14, as shown in the drawings.

1.8 represents the mixing-chamher. This chamber is provided with a contracted throat lfil and a flared outlet-opening 20. The throat portion 19 extends through circular openings in the plates 13 and 14., so that the flared outlet 20 projects slightly inside the door. The end of the mixing-chamber l8 opposite the outlet 20 is provided with a circular cap 21. in this cap 21 area number of openings 22.

- described.

A shutter 23 is mounted to rotate upon a circular boss 24, formed concentrically upon the inside of the cap 21. This shutter 23 is provided with a number of openings 25, corre' sponding to the number of openings in the cap 21, and is actuated by a knob 26, the shank of which passes through a slot 27 in the cap 21. A collar 28, held in place by a setserew 29, holds the shutter 23 on the boss 24.

Intoascrew-threaded opening in the middle of the cap 21, surrounded by the boss 24, is screwed a cylinder 30. Situated concentrically within this cylinder 30 is a second cylinder 31. The outer ends of the two cylinders 30 and 31 are closed and the two cylinders 30 and 31 are united together by means of a common head 32. The inner end of the cylinder 30 projects a short distance into the mixingchamber 18. The inner end of the cylinder 30 is open and is slightly contracted about the.

cylinder 31, so as to leave a narrow annular opening 33 between the two cylinders 30 and 31. The inner end of the cylinder 31 is also slightly contracted and extends a short distance beyond the inner end of the cylinder 30.

34 is a screw-threaded pipe passing through a screw-threaded opening at the center of the head 32 and locked in position therein by a. nut 35. The outer end of this pipe 34 is provided with a square head 36 for purposes of adjustment. The pipe 34 is situated concentrically Within the cylinder 31 and projects beyond the inner end of the cylinder 31 to a point just within the outlet 20. Between the contracted end of the cylinder 31 and the pipe 34 is'left a narrow annular passage 37. The pipe 34 is open at each end for the purpose of admitting air at the outlet 20, as hereinafter A pipe 40 passes through the cylinder 30 and opens into the cylinder 31. A second pipe 41 opens into the cylinder 30. Each of these pipes is provided with a regulating-valve 42 and with-three ball-and-socket joints 43, so that the door of the kiln or turnace may be swung back upon its hinges 16 without breaking those pipe connections. Two other pipes 45, which are provided with regulating-valves 46, connect the space in the door between the plates 13 and M with the mixing-chamber 18 adjacent to the cap 21, Figs. 1 and 2.

ln the operation of our invention oil is supplied from any suitable source by means of the pipe 10 tothe inixing-chamber 18 through the annular opening 37, and steam from any 1 a hotair chamber, a hot-air conduit connectconvenient source is supplied, by means of the pipe 411, to the mixing-chamber 18 through the annular opening 33,"v the relative supply of oil .and steam being regulated by the valves 42.

When the oil emerges from the opening 37, it

is gasified by the steam-jet issuing from tho opening This gasifying process is greatly assisted by the hot air brought by the suction created by the steam-jet into the mixing-chainber 18 from the space between the door-plates l3 and 14 through the pipes 45. This supply of hot air is regulated by the valves 46. Air is also supplied to the mixing-chamber through the openings in the shutter 23 and cap 21. This air-supply is regulated by moving the shutter in the ordinary manner. The force of the steam-jet also causes air to be drawn through the pipe 34 and discharged into the mixed fuel as it passes out of the dischargeopening 20, where it is consumed. This airdischarge at the opening 20 greatly assists perfect combustion of the fuel, and the point at which the discharge takes place is regulated by screwing up or unscrewing the pipe 34 by means of the head 36.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent of the United States, is;-

1. In afluid-fuel burner, a mixing-chamber, a steam-conduit opening into said chamber for discharging a jet of steam therein, a fluid-fuel conduit opening into said chamber and pro jecting beyond said steam-jet, and an air-conduit passing through said steam and fuel conduits and opening into said chamber between the mouth of said fluid-fuel conduit and the mouth of said mixing-chamber.

2. In a fluid-fuel burner, a mixing-chamber having a contracted throat and flaring outlet, a cap carried by said mixing-chamber, air,

steam and fuel conduits carried by said cap anddischarging in said mixing-chamber, said cap being provided with an air-inlet surrounding said steam and fuel conduits, and a valve controlling said inlet.

3. In a fluid-fuel burner, a mixing-chamber having a contracted throat and a flaring outlet, a hotalr chamber, a hot-air conduit connecting said hot air chamber and mixing chamber, an adjustable air-pipe extending beyond thodischargc end of said hot-air conduit, a fuel-conduit discharging into said mixingchamber between the discharge end of the hot air conduit and the air-pipe, and a sleam'conduit also discharging intosaid mixingchamher.

4. in ulluid-luel burner, amixing-chamber,

l l l ing said hot-air chamber and mixing-chamber, a steam pipe projecting into said mixingchamber, a fluid-fuel conduit discharging into said mixingchamberbeyond said steam-pipe, and an air-pipe discharging beyond the discharge end of said fuel-conduit.

5. In a fluid-fuel burner, the combination with a mixing-chamber having a contracted throat and a flaring outlet, of a steam-conduit projecting into and terminating within said chamber, a fuel-conduit extending through said steam-conduit and terminating beyond the same and in said mixing-chamber, and an air-pipe extending through said fuel-conduit and terminating in said flaring outlet.

6. The combination with a plate forming part of the inclosing wall of the furnace, of a hot-air chamber carried by said plate,'a mixing-chamber extending through said hot-air chamber, steam and fuel conduits terminating in said mixing-chamber, and an air-conduit connecting said hot-airchamber with said mixing-chamber.

7. The combination with a plate forming part of the inclosing wall of a furnace, of a hot-air chamber carried by said plate, a mixing-chamber provided with acontracted throat I and a flaring outlet and extending through said hot-airchamber, a cap carried by said mixingchamber, a steam-conduit extending through said cap, a fuel-conduit extending through said steam-conduit, an air-pipeextending through said fuel-conduit and longitudinally adjustable, and an adjustable air-inlet in said cap.

8. The combination with a plate forming part of theinclosing wall of a furnace, of a. hot-air chamber carried by said plate, a mixing-chamber provided with a contracted throat and a flaring outlet and extending through said hot-air chamber, a cap carried by said mixingchamber, esteem-conduit extending through said cap, a fuel-conduit extending through.

said steam-conduit, an air-pipe extending through said fuel-conduit and longitudinally adjustable, an adjustable air-inlet in said cap;

and a l1otair conduit connecting said hot-air chamber and said mixing-chamber.

In testimony whereof we have hereunto .s et-- our hands and afiixed our seals in the presence of the two subscribing witnesses.

FRED. L. MCGAHAN. [L. s.] EDWARD G. FLAG'ER. [L. s.]

Witnesses:

BENNn'r'rn PIKn, W. A. ALEXANDER. 

